I'm on my third vial of testosterone from stroheckers pharmacy but the color of the testosterone is different in this vial compared to the others. My first two had a yellowish tint but this one is completely clear. Does anybody know why that would be?

I don't, but wouldn't worry about it. Probably been produced in a different lab. Perhaps the chemists there decided a dye is unnecessary

Call and ask, chances are it has something to do with the type of oil used.